You might try some Wagner overtures and preludes, such as Der fliegende Holländer, the 3rd act of Die Walküre, and Rienzi. Maybe one or the other of the Tennstedt orchestral excerpt sets. Siegfrieds Trauermusik from Götterdämmerung, which appears consistently in the movie Excalibur is another piece that might serve your purposes. The finale to that music-drama would, too, I think: the gods meet their demise as the world burns and the Rhine overflows its banks. It's cosmic.
While I recommend listening to the whole work, if you want fast-paced and emotion-laden classical, Wagner's overtures and preludes will fit the bill.